GCC for Windows 64 & 32 bits


Mingw-w64 is an advancement of the original mingw.org project, created to support the GCC compiler on Windows systems. It has forked it in 2007 in order to provide support for 64 bits and new APIs. It has since then gained widespread use and distribution.

The development and community are very active and welcoming with new contributors every month and simple installers.

Version 6 has been released

v6.0.0: 2018-09-17

Notable changes:

  • C++ __cxa_atexit thanks to Martin Storsjö and Liu Hao
  • Massive additions to support UCRT thanks to Martin Storsjö
  • Sync COM interface headers with Wine development thanks to Jacek Caban
  • WinRT additions thanks to Hugo Beauzée-Luyssen
  • ARM32 and ARM64 additions thanks to Martin Storsjö
  • CRT library api-ms-win-core additions thanks to Martin Storsjö
  • CRT library def file reorganization thanks to Martin Storsjö
And many other additions thanks to, but not limited to (in Alphabetical order)

You can also look at the full list of versions.

Headers, Libraries and Runtime

  • More than a million lines of headers are provided, not counting generated ones, and regularly expanded to track new Windows APIs.
  • Everything needed for linking and running your code on Windows.
  • Winpthreads, a pthreads library for C++11 threading support and simple integration with existing project.
  • Winstorecompat, a work-in-progress convenience library that eases conformance with the Windows Store.
  • Better-conforming and faster math support compared to Visual Studio's.


  • gendef: generate Visual Studio .def files from .dll files.
  • genidl: generate .idl files from .dll files.
  • widl: compile .idl files.

Friend projects

Mingw-w64 interacts a lot with other projects in order to help everyone move forward. Contributions have been going to and coming from these projects:

Most Recent Activity

dick freebird posted a comment on discussion Help

Get partway down the package install list in the win-builds GUI and it just hangs with some package download failing, Installer will not resume - demands an empty folder to install, or exceptions-out. So there's no option but to keep on trying and fail again, on some (never the same) step or other. Making the installer more fault tolerant, retry-aware, would be good.

LH_Mouse committed [5e2b39]

crt: Add a few more UUID's for IHTMLOMWindowServices etc

LH_Mouse committed [5a5a7c]

include: Add GUIDs for audio/image/media file summary information

LH_Mouse committed [c8f9b0]

crt: Add CLSID_DCOMAccessControl to uuid.c

LH_Mouse committed [610106]

crt: Add defines for IID_IEnumContextProps and IID_IContext in uuid.c

LH_Mouse committed [2d52c4]

include: update winreg header file

LH_Mouse committed [acd0bf]

crt: Implement IID_IAccessControl

Jacek Caban committed [60d5a6]

widl: Updated to current Wine version.

Jacek Caban committed [708498]

headers: Regenerated imported headers with current widl version.

Martin Storsjö committed [561388]

crt/urlmon: move to lib-common